Seasonal Variation in the Diet of the White-Tailed Kite (Elanus leucurus) in A Suburban Area of Southern Chile

González‐Acuña, Daniel; Briones, E Escobar; Ardiles, Karen; Valenzuela-Dellarossa, Gustavo; S, Soraya Corales; R., Ricardo A. Figueroa

doi:10.3356/jrr-08-64.1

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…We found that White-tailed Kites in the Argentine Pampas were primarily mammal-eating, activesearch predators. This characterization coincides with previous reports of White-tailed Kite foraging behavior in different parts of their distribution in South America (e.g., Chile: Meserve 1977, Schlatter et al 1980, González-Acuña et al 2009Brazil: Scheibler 2004;Argentina: Leveau et al 2002, Sarasola et al 2007, and North America (see Dunk 1995 and references therein). Moreover, our results are consistent with those reported for other Elanus species around the world Jaksić 1989, Thiollay 1994).…”

Section: Discussionsupporting

confidence: 90%

“…These rodents represent a considerable proportion of White-tailed Kites' diet in agricultural areas of central Argentina (Leveau et al 2002, Sarasola et al 2007, which suggests that this raptor may be preying on the most locally abundant species. At a regional scale, our results correspond with those from Chile, where Whitetailed Kites prey on the most abundant sigmodontine rodents in agricultural areas (Meserve 1977, Schlatter et al 1980, González-Acuña et al 2009.…”

Section: Discussionsupporting

confidence: 87%

“…This perception is likely related to the fact that kites are usually conspicuous when they search for prey by hovering in open areas Jaksić 1989, Dunk 1995). A preponderance of rodents seems to be a consistent feature of the diets of kites during both breeding and nonbreeding seasons and in different vegetation communities in North America (Pickwell 1930, Hawbecker 1940, Bond 1940, Stoner 1947, Cunningham 1955, Dixon et al 1957, Waian and Stendell 1970, Stendell and Myers 1973, Warner and Rudd 1975 and South America (Meserve 1977;Schlatter et al 1980;Leveau et al 2002;Scheibler 2004Scheibler , 2007Sarasola et al 2007Sarasola et al , 2010González-Acuña et al 2009). Compared to diet, the behavior of White-tailed Kites has been much less studied, and most reports focus on hunting behavior (Warner and Rudd 1975, Mendelsohn and Jaksić 1989, Skonieczny and Dunk 1997.…”

Section: Patrones De Actividad Comportamiento De Alimentación Y Dietmentioning

confidence: 99%

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Activity Budgets, Foraging Behavior, and Diet of White-Tailed Kites (Elanus leucurus) During Breeding and Nonbreeding Seasons In the Argentine Pampas

Baladrón

Pretelli

Cavalli

et al. 2018

Journal of Raptor Research

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From 2005 to 2009 we evaluated the activity patterns and food habits of White-tailed Kites (Elanus leucurus) during the breeding and nonbreeding seasons in the Argentine Pampas. According to time-activity budget analyses, perching was the most frequently observed activity during the nonbreeding season (52% of total time), whereas foraging was the most frequent activity during the breeding season (41% of total time). Flight was the least frequent of all kites' activities in both seasons (8% and 9% during the breeding and nonbreeding season, respectively). Even when kites spent a similar percentage of time foraging during both breeding and nonbreeding seasons (41% and 39%, respectively), their hunting technique differed between seasons. During the nonbreeding season, we only observed kites using active searching to forage, but during the breeding season, we observed them using active and passive searching in similar proportions. According to pellet analyses, the diet of kites was mostly composed of rodents (. 96% of total prey). Small rodents (body mass , 35 g) were dominant in numeric terms in the diet in both seasons, but larger rodents represented the bulk of biomass. Our results indicate that in the Argentine Pampas, White-tailed Kites are predominantly mammal-eating, active-search predators, as previously reported for the species in South America and North America and for other Elanus species around the world.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 87%

Section: Patrones De Actividad Comportamiento De Alimentación Y Dietmentioning

confidence: 99%

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Activity Budgets, Foraging Behavior, and Diet of White-Tailed Kites (Elanus leucurus) During Breeding and Nonbreeding Seasons In the Argentine Pampas

Baladrón

Pretelli

Cavalli

et al. 2018

Journal of Raptor Research

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“…De hecho, casi todas las especies de aves rapaces registradas en el sitio de estudio fueron observadas cazando en pastizales dentro del ACST. Estudios previos sobre la dieta de peucos y milanos bailarines han demostrado que éstos consumen roedores silvestres todo el año González-Acuña et al 2009). Algunos grupos de aves acuáticas tales como taguas y patos constituyen también una parte importante de la dieta del peuco en el ACST .…”

Section: Resultados Y Discusiónunclassified

Aves asociadas al Aeropuerto Carriel Sur de Talcahuano, sur de Chile: evaluación de peligro aviario

Barrientos¹,

González‐Acuña²,

Moreno³

et al. 2016

Gayana (Concepc.)

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RESUMENEntre el verano de 2002 y 2005 se evaluó la riqueza y abundancia de aves asociadas al Aeropuerto Carriel Sur de Talcahuano y se estimó el riesgo de colisión que representaría cada especie para la aeronavegación. Las aves fueron contabilizadas en 10 puntos de conteos distribuidos en distintos hábitats alrededor del las pistas de aterrizaje. El riesgo de colisión fue estimado mediante el índice de peligro aviario (IPA) el cual combina tamaño, abundancia e historial de colisiones de cada especie. Durante el periodo de estudio se registraron 63 especies, mas 10 especies que fueron registradas después del verano de 2005. Las especies más abundantes fueron el chirigüe, la gaviota dominicana, el queltehue y la loica (28%, 14%, 10%, 8% del total de registros individuales). Con excepción de la gaviota dominicana, todas las especies exhibieron ciclos estacionales de abundancia. La gaviota dominicana mostró irrupciones multianuales aparentemente por factores ambientales no bien determinados. Las especies que representarían un mayor riesgo de colisión para la aeronavegación son la gaviota dominicana (IPA = 36), el queltehue (IPA = 24), el gaviotín sudamericano (IPA = 16), el jote de cabeza negra (IPA = 12), el yeco (IPA = 9) y el tiuque (IPA = 8). Sin embargo, el IPA de cada especie varió temporalmente desde valores muy altos a valores muy bajos según los cambios de abundancia. Este estudio refl eja la necesidad de evaluaciones de largo plazo de los cambios en el tamaño poblacional de especies de aves para una mejor aproximación del riesgo de colisiones aves-aeronaves. ABSTRACTBetween the summer 2002 and 2005 was evaluated the richness and abundance of birds associated to the Carriel Sur Airport of Talcahuano and was estimated the collision risk representing each species for air navigation. Birds were counted in 10 count points distributed in different habitats around the landing runways. The collision risk was estimated by the Avian Hazard Index (AHI) which combines size, abundance and history of collisions of each species. During the study period 63 species were recorded, plus 10 aditional species were recorded after summer 2005. The most abundant species were the Grassland Yellow-Finch, Kelp Gull, Southern Lapwing Long-tailed Meadowlark (28%, 14%, 10%, 8% of all individual records). Excepting Kelp Gull, all remaining species exhibited seasonal cycles of abundance. The Kelp Gull showed multiyear outbreaks triggered. The species representing a higher collision risk for air navigation are the Kelp Gull (API = 36), Southern Lapwing (AHI = 24), South American Tern (AHI = 16), Black Vulture (AHI = 12), Neotropic Cormorant (AHI = 9) and Chimango Caracara (AHI = 8). However, the each species' AHI varied temporally from very high to very low values according to changes in abundance. This study refl ects the need for long-term assessments of changes in population size of bird species to better approximate the risk of bird-aircraft collisions.

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“…The feeding ecology is the best known aspect of White-tailed Kite's ecology. Most studies performed along the species' distribution range agree that this kite is a specialist predator of small mammals, particularly rodents (USA: Hawbecker 1940, Bond 1942, Dixon et al 1957, Waian & Stendell 1970, Stendell & Myers 1973Chile: Meserve 1977, Schlatter et al 1980, González-Acuña et al 2009Argentina: Leveau et al 2002, Sarasola et al 2007, 2010, Baladrón et al 2018Brazil: Scheibler 2004). This species is characterized as an active-search predator that uses hovering as its main hunting technique (Watson 1940, Warner & Rudd 1975 Reproductive behavior of White-tailed Kites (Elanus leucurus) in the Pampas of Argentina Jaksic 1989, Dunk 1995, Baladrón et al 2018.…”

Section: Introductionmentioning

confidence: 99%

Reproductive behavior of White-tailed Kites (Elanus leucurus) in the Pampas of Argentina

Baladrón

Cavalli

Pretelli

et al. 2019

Rev. Bras. Ornitol.

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The White-tailed Kite (Elanus leucurus) is a raptor that has been less studied in the Neotropics than in the Nearctic region, especially in relation to its reproductive behavior. In this study, we report information about the phenology and activity patterns of this raptor at the Pampas of Argentina. We found that White-tailed Kites have a prolonged breeding season, from October to May. Time-activity budgets of mating pairs indicated a pronounced division of roles in parental care between sexes. Females devoted most of their time to nest construction, incubation and chick care (80% of total time) and males to food provisioning and vigilance (70% of total time). We registered 11 cases of prey transfer from the male to the female. In four cases the transfer occurred in flight and in the remaining seven cases while individuals were perched. Our results agree with general patterns on breeding behavior of White-tailed Kites from North America, suggesting a consistent behavioral pattern throughout the species' distribution.

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Seasonal Variation in the Diet of the White-Tailed Kite (Elanus leucurus) in A Suburban Area of Southern Chile

Cited by 7 publications

References 23 publications

Activity Budgets, Foraging Behavior, and Diet of White-Tailed Kites (Elanus leucurus) During Breeding and Nonbreeding Seasons In the Argentine Pampas

Activity Budgets, Foraging Behavior, and Diet of White-Tailed Kites (Elanus leucurus) During Breeding and Nonbreeding Seasons In the Argentine Pampas

Aves asociadas al Aeropuerto Carriel Sur de Talcahuano, sur de Chile: evaluación de peligro aviario

Reproductive behavior of White-tailed Kites (Elanus leucurus) in the Pampas of Argentina

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